(19)
(11) EP 4 645 360 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.01.2026 Bulletin 2026/04

(43) Date of publication A2:
05.11.2025 Bulletin 2025/45

(21) Application number: 25203790.8

(22) Date of filing: 29.04.2021
(51) International Patent Classification (IPC): 
H01H 50/14(2006.01)
H01H 50/02(2006.01)
(52) Cooperative Patent Classification (CPC):
H01H 50/14; H01H 9/0066; H01H 50/541; H01H 2011/0087; H01H 50/02; H01H 33/66207; H01H 50/023
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 30.04.2020 CN 202010366809
30.04.2020 CN 202020715184 U
19.05.2020 CN 202010426551

(62) Application number of the earlier application in accordance with Art. 76 EPC:
21726194.0 / 4143867

(71) Applicant: Xiamen Hongfa Electric Power Controls Co., Ltd.
Xiamen, Fujian 361021 (CN)

(72) Inventors:
  • ZHONG, Shuming
    Xiamen, 361027 (CN)
  • CHEN, Jinpin
    Xiamen, 361027 (CN)
  • DAI, Wenguang
    Xiamen, 361027 (CN)
  • CHEN, Songsheng
    Xiamen, 361027 (CN)

(74) Representative: Potter Clarkson 
Chapel Quarter Mount Street
Nottingham NG1 6HQ
Nottingham NG1 6HQ (GB)

   


(54) HIGH-VOLTAGE DC RELAY


(57) A high-voltage DC relay convenient for quick assembly includes a housing (1), and load leading-out terminals (2), coil leading-out terminals (3) and auxiliary leading-out terminals (4) being provided with a connecting part (21, 31, 41) for electrical connection with an external component. The connecting parts (21, 31, 41) are respectively exposed to the housing (1); The connecting part (21) of the load leading-out terminal (2) is arranged at a top end of the housing (1); and the connecting parts (31, 41) of the coil leading-out terminal (3) and the auxiliary leading-out terminal (4) is arranged at a bottom end of the housing (1). Each connecting part has a welding plane (211, 311, 411) for electrical connection with a corresponding one of the external components through quick welding. The present disclosure has characteristics of simple structure, low manufacturing cost and reliable electrical connection.





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